Hello,
I have developed a web application using the JSP model 2 architecture. That
means one central servlet dispatching requests to JSP using beans generated
by the central servlet.
The problem is that when forwarding from the servlet to the JSP, I got a Dr
Watson error. The code looks like code sample 1 below. However, if the jsp
is accessed directly before being the target of a forward, I have no error
if then a forward is done.
So my question is : Is there some properties file I should modify so that
the jsp are "initialized" and are accessible through the request dispatcher
forward method ??
I am using Orion on a window NT platform.
The message received when it goes wrong is:
*** panic: GC failed to enter single threaded mode (possibly undetached
threads?), error code = -1
Thanks for any pointers you could provide me.
Bertrand Legros
Code Sample 1
*******************
try {
Class c = Class.forName(helperBeanName);
hb = (HelperBean)c.newInstance();
// send the parameter to HelperBean
results = hb.execute(parms);
// results should contain target(JSP) and Vector for target
session.putValue("INResults",results);
String url = (String)results.get("JSPTarget");
logWriter.log("Target received :"+url,LogWriter.INFO);
ServletContext sc = getServletContext();
RequestDispatcher rd = sc.getRequestDispatcher(url);
if (rd != null) {
logWriter.log("Forwarding to :"+url,LogWriter.INFO);
rd.forward(req,res);
} else {
error(new Exception("rd null !!!"));
return;
}
// send redirect give the same problem
//res.sendRedirect(url);
return;
} catch (ClassNotFoundException cne) {
error(cne);
} catch (InstantiationException ie) {
error(ie);
} catch (IllegalAccessException iae) {
error(iae);
} catch (HelperBeanException hbe) {
error(hbe);
}
Code of the target jsp
**************************
<%@ page session="true" import="java.util.*" errorPage="error.jsp" %>
<HTML>
<LINK rel="stylesheet" type="text/css" href="../BugTrackerStyleSheet.css"/>
<HEAD>
<TITLE>Bug Tracker Home Page </TITLE>
</HEAD>
<BODY>
<%
Hashtable in = (Hashtable)session.getValue("INResults");
session.putValue("UserID",in.get("UserID"));
%>
<DIV id=head class="header">
Welcome to bug tracker!
</DIV>
<DIV id=menu class="menu">
<A
HREF="BugTrackerServlets.SmartServlet?Transaction=REPORTBUG">Report a bug or
a proposed enhancement </A>
<BR>
<A
HREF="BugTrackerServlets.SmartServlet?Transaction=UPDATESTATUS">Update the
status of an item</A>
</DIV>
</BODY>
</HTML>
